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Boris Chiou
Sep 25
Intent to Ship: Scroll-driven Animations
As of Fx159, I intend to turn Scroll-driven Animations on by default on all platforms. It has been
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Intent to Ship: Scroll-driven Animations
As of Fx159, I intend to turn Scroll-driven Animations on by default on all platforms. It has been
Sep 25
Andreas Pehrson
Sep 22
Intent to prototype: MediaStreamTrackProcessor and VideoTrackGenerator with transferable MediaStreamTrack and MediaStreamTrackHandle
Summary: MediaStreamTrackProcessor is the consuming end of a (video) MediaStreamTrack whereas
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Intent to prototype: MediaStreamTrackProcessor and VideoTrackGenerator with transferable MediaStreamTrack and MediaStreamTrackHandle
Summary: MediaStreamTrackProcessor is the consuming end of a (video) MediaStreamTrack whereas
Sep 22
Sajid Anwar
Sep 21
Intent to Ship: CSS Typed Arithmetic
As of Firefox 158, I intend to enable CSS Typed Arithmetic (unit algebra) by default on all platforms
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Intent to Ship: CSS Typed Arithmetic
As of Firefox 158, I intend to enable CSS Typed Arithmetic (unit algebra) by default on all platforms
Sep 21
Dave Townsend
Sep 19
mach commands now default to using a temporary application data directory
Bug 1977540 has landed, which means that mach run and tests will now start Firefox using a custom
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mach commands now default to using a temporary application data directory
Bug 1977540 has landed, which means that mach run and tests will now start Firefox using a custom
Sep 19
Ryan Hunt
Sep 18
Intent to prototype: WebAssembly Component Model
Summary: The WebAssembly Component Model is a proposal at the W3C WebAssembly CG/WG. Wasm components
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Intent to prototype: WebAssembly Component Model
Summary: The WebAssembly Component Model is a proposal at the W3C WebAssembly CG/WG. Wasm components
Sep 18
Rémi Papillié
Sep 18
Intent to prototype: CSS corner-shape
Summary: The corner-shape property is used to modify the shape of rounded corners created by the
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Intent to prototype: CSS corner-shape
Summary: The corner-shape property is used to modify the shape of rounded corners created by the
Sep 18
Tom Schuster
,
Nicolas Chevobbe
2
Sep 18
Intent to prototype: Connection Allowlists
I filed some DevTools bugs for this: - Bug 2073466 - Check that blocked requests because of
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Intent to prototype: Connection Allowlists
I filed some DevTools bugs for this: - Bug 2073466 - Check that blocked requests because of
Sep 18
Paul Adenot
,
Tom Ritter
3
Sep 16
Intent to prototype and ship Web Speech: SpeechRecognition (on device)
Both, the had a cloud-based path for a long time, but they have shipped an on-device implementation
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Intent to prototype and ship Web Speech: SpeechRecognition (on device)
Both, the had a cloud-based path for a long time, but they have shipped an on-device implementation
Sep 16
Emilio Cobos Álvarez
3
Sep 16
Intent to prototype: Use SkPDF as our default print-to-pdf back-end
This has now been on nightly for a while, QA has gone through it, and all known issues / regressions
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Intent to prototype: Use SkPDF as our default print-to-pdf back-end
This has now been on nightly for a while, QA has gone through it, and all known issues / regressions
Sep 16
Sajid Anwar
Sep 14
Intent to Prototype: CSS random() math function
Summary: The CSS random() math function allows authors to introduce randomness into their styles,
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Intent to Prototype: CSS random() math function
Summary: The CSS random() math function allows authors to introduce randomness into their styles,
Sep 14
Leo Tenenbaum
Sep 10
Intent to prototype & ship: Notification.navigate
Summary: The navigate option for the Notification constructor and ServiceWorkerRegistration.
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Intent to prototype & ship: Notification.navigate
Summary: The navigate option for the Notification constructor and ServiceWorkerRegistration.
Sep 10
Keith Cirkel
Sep 9
Intent to ship: Scoped Custom Element Registries
Summary: Scoped Custom Element Registries allow multiple custom element registries per page, meaning
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Intent to ship: Scoped Custom Element Registries
Summary: Scoped Custom Element Registries allow multiple custom element registries per page, meaning
Sep 9
Keith Cirkel
Sep 9
Intent to ship: Sanitize While Parsing
Summary: "Sanitize While Parsing" consumes the Sanitizer API's config during HTML
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Intent to ship: Sanitize While Parsing
Summary: "Sanitize While Parsing" consumes the Sanitizer API's config during HTML
Sep 9
Timothy Nikkel
, …
Jake Archibald
8
Sep 8
Intent to ship: JPEG XL
I think supporting this part of JPEG XL is important for compatibility reasons. Safari already
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Intent to ship: JPEG XL
I think supporting this part of JPEG XL is important for compatibility reasons. Safari already
Sep 8
Andreas Farre
, …
Simon Pieters
8
Sep 7
Intent to Unship: XSLT
On Wed, Aug 26, 2026 at 5:57 PM 'Jeff Muizelaar' via dev-pl...@mozilla.org <dev-
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Intent to Unship: XSLT
On Wed, Aug 26, 2026 at 5:57 PM 'Jeff Muizelaar' via dev-pl...@mozilla.org <dev-
Sep 7
Boris Chiou
Sep 3
Intent to prototype and ship: closest-corner and farthest-corner for circle() and ellipse() basic shapes
Summary: ellipse() and circie() from [css-shapes] accept <radial-size>, which has been extend
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Intent to prototype and ship: closest-corner and farthest-corner for circle() and ellipse() basic shapes
Summary: ellipse() and circie() from [css-shapes] accept <radial-size>, which has been extend
Sep 3
Kanaru Sato
Sep 3
Intent to prototype and ship: CSS overscroll-behavior value, "chain"
Summary: Add a value, "chain", to overscroll-behavior property. This is a value which
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Intent to prototype and ship: CSS overscroll-behavior value, "chain"
Summary: Add a value, "chain", to overscroll-behavior property. This is a value which
Sep 3
Kala Severe
Sep 3
Introducing PerfCompare's Simple View
Hello everyone, We're excited to announce that PerfCompare has launched its simple view! It
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Introducing PerfCompare's Simple View
Hello everyone, We're excited to announce that PerfCompare has launched its simple view! It
Sep 3
Boris Chiou
,
一丝
2
Sep 1
Intent to prototype: support percentage value for text-decoration-inset
WebKit implemented this feature a few days ago and added more test cases. https://github.com/WebKit/
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Intent to prototype: support percentage value for text-decoration-inset
WebKit implemented this feature a few days ago and added more test cases. https://github.com/WebKit/
Sep 1
Fuqiao Xue
Sep 1
Intent to prototype and ship: CSS generic() function
Summary: CSS is introducing a new functional syntax for newer generic font families: `generic()`.
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Intent to prototype and ship: CSS generic() function
Summary: CSS is introducing a new functional syntax for newer generic font families: `generic()`.
Sep 1
Olivier (shtrom) Mehani
Aug 30
Old lando at https://lando.services.mozilla.com/ is going away
Hi all, tl;dr: * We have been using new Lando at https://lando.moz.tools/ since early 2025. * We are
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Old lando at https://lando.services.mozilla.com/ is going away
Hi all, tl;dr: * We have been using new Lando at https://lando.moz.tools/ since early 2025. * We are
Aug 30
Sajid Anwar
Aug 28
Intent to Ship: CSS at-rule() function for @supports
As of Firefox 157, I intend to turn the CSS at-rule() function for the @supports at-rule on by
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Intent to Ship: CSS at-rule() function for @supports
As of Firefox 157, I intend to turn the CSS at-rule() function for the @supports at-rule on by
Aug 28
Ting-Yu Lin 林庭宇
Aug 20
Intent to Prototype and Ship: named-feature() function for CSS @supports
Summary: named-feature() is an @supports function that lets authors detect features that cannot be
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Intent to Prototype and Ship: named-feature() function for CSS @supports
Summary: named-feature() is an @supports function that lets authors detect features that cannot be
Aug 20
Ting-Yu Lin 林庭宇
Aug 20
Intent to Prototype: CSS anchor positioning with transforms
Summary: When an anchor element is transformed, the anchor-positioned element's position and size
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Intent to Prototype: CSS anchor positioning with transforms
Summary: When an anchor element is transformed, the anchor-positioned element's position and size
Aug 20
Simon Chopin
Aug 14
Native stack traces in local tests
Hi folks, We've just landed a change[0] that should make life easier for those doing native
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Native stack traces in local tests
Hi folks, We've just landed a change[0] that should make life easier for those doing native
Aug 14
Ben Visness
Aug 12
Intent to prototype and ship: WebAssembly Wide Arithmetic proposal
As of Firefox 155, we intend to enable the WebAssembly wide arithmetic proposal by default on all
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Intent to prototype and ship: WebAssembly Wide Arithmetic proposal
As of Firefox 155, we intend to enable the WebAssembly wide arithmetic proposal by default on all
Aug 12
Ben Visness
Aug 12
Intent to prototype and ship: WebAssembly Compact Import Section proposal
As of Firefox 155, we intend to enable the WebAssembly compact import section encoding by default on
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Intent to prototype and ship: WebAssembly Compact Import Section proposal
As of Firefox 155, we intend to enable the WebAssembly compact import section encoding by default on
Aug 12
Keith Cirkel
Aug 12
Intent to prototype: Sanitize While Parsing
Summary: Change the consumption steps of the Sanitizer API so that it sanitizes during parse steps,
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Intent to prototype: Sanitize While Parsing
Summary: Change the consumption steps of the Sanitizer API so that it sanitizes during parse steps,
Aug 12
Andrew Halberstadt
Aug 7
[PSA] Firefox tasks starting to clone from Github
Hey Firefox devs! Migration of Firefox's CI to Github is officially underway. If you inspect the
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[PSA] Firefox tasks starting to clone from Github
Hey Firefox devs! Migration of Firefox's CI to Github is officially underway. If you inspect the
Aug 7
Swarup Ukil
Aug 6
Intent to prototype: Display Property Animations
Summary: Per CSSWG resolution, the `display` property is now discretely animatable, in both CSS
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Intent to prototype: Display Property Animations
Summary: Per CSSWG resolution, the `display` property is now discretely animatable, in both CSS
Aug 6
